Remember, the sides are labelled with lower case letters, and angles are labelled with CAPITAL letters. The angles are labelled with the CAPITAL letter that is opposite from the side with that letter.
so:
Angle A is opposite side a
Angle B is opposite side b
Angle C is opposite side c
Step-by-step explanation:
Let the required number be x

Thus, the required number is 200.
Let the width be x, then the length is x + 12.
Area = length x width = x(x + 12) = 589

Solving the quadratic equation, we have that
x = 19 feet
i.e. the width is 19 feet.
Volume of a cylinder = πr^2h
π(2)^2(3)
12π
v=37.68 inches cubed